LINAC2012 - List of Keywords (drift-tube-linac)

Paper	Title	Other Keywords	Page
TUPB101	Beam Loss Occurred at DTL Cavity in J-PARC Linac	DTL, radiation, cavity, linac	696
	A. Miura, K. Hirano, T. Ito, T. Maruta JAEA/J-PARC, Tokai-mura, Japan M. Ikegami J-PARC, KEK & JAEA, Ibaraki-ken, Japan T. Miyao, F. Naito, K. Nanmo KEK, Ibaraki, Japan
	The beam operation of J-PARC linac was suspended until December 2011 due to the damage by the Tohoku earthquake in March 2011. After resumed the operations, we measured the residual radiation along with the beam line during a short interval. Because the higher residual radiation was detected at the surface of drift tube linac (DTL) cavity by radiation survey, we installed the scintillation beam loss monitors (BLM) at the points where the higher radiation was detected to understand the cause of the radiation. Even the DTL section is low energy part of the linac, fine structure of the beam loss was observed by the scintillation BLM. And we measured the beam loss occurred at the DTL with the parameters of beam orbit and cavity settings. Also, the BLM is employed for the linac tuning. In this paper, the result of the radiation measurement and beam loss signals obtained by the scintillation BLMs are presented.

THPB030	DTL Design for ESS	DTL, linac, simulation, proton	918
	M. Comunian, F. Grespan, A. Pisent INFN/LNL, Legnaro (PD), Italy R. De Prisco Lund University, Lund, Sweden M. Eshraqi ESS, Lund, Sweden P. Mereu INFN-Torino, Torino, Italy
	In the present design of the European Spallation Source (ESS) accelerator, the Drift Tube Linac (DTL) will accelerate a proton beam of 50 mA pulse peak current from 3 to 80 MeV. It is designed to operate at 352.2 MHz, with a duty cycle of 4% (3 ms pulse length, 14 Hz repetition period). Permanent magnet quadrupoles (PMQs) are used as focusing elements in a FODO lattice scheme, which leaves space for steerers and diagnostics . In this paper beam dynamics studies and preliminary RF design are shown, including constraints in terms of quadrupole dimensions, total length, field stability, RF power, peak electric field.

Paper

Title

Other Keywords

Page

TUPB101

Beam Loss Occurred at DTL Cavity in J-PARC Linac

DTL, radiation, cavity, linac

696

A. Miura, K. Hirano, T. Ito, T. Maruta
JAEA/J-PARC, Tokai-mura, Japan
M. Ikegami
J-PARC, KEK & JAEA, Ibaraki-ken, Japan
T. Miyao, F. Naito, K. Nanmo
KEK, Ibaraki, Japan

The beam operation of J-PARC linac was suspended until December 2011 due to the damage by the Tohoku earthquake in March 2011. After resumed the operations, we measured the residual radiation along with the beam line during a short interval. Because the higher residual radiation was detected at the surface of drift tube linac (DTL) cavity by radiation survey, we installed the scintillation beam loss monitors (BLM) at the points where the higher radiation was detected to understand the cause of the radiation. Even the DTL section is low energy part of the linac, fine structure of the beam loss was observed by the scintillation BLM. And we measured the beam loss occurred at the DTL with the parameters of beam orbit and cavity settings. Also, the BLM is employed for the linac tuning. In this paper, the result of the radiation measurement and beam loss signals obtained by the scintillation BLMs are presented.

THPB030

DTL Design for ESS

DTL, linac, simulation, proton

918

M. Comunian, F. Grespan, A. Pisent
INFN/LNL, Legnaro (PD), Italy
R. De Prisco
Lund University, Lund, Sweden
M. Eshraqi
ESS, Lund, Sweden
P. Mereu
INFN-Torino, Torino, Italy

In the present design of the European Spallation Source (ESS) accelerator, the Drift Tube Linac (DTL) will accelerate a proton beam of 50 mA pulse peak current from 3 to 80 MeV. It is designed to operate at 352.2 MHz, with a duty cycle of 4% (3 ms pulse length, 14 Hz repetition period). Permanent magnet quadrupoles (PMQs) are used as focusing elements in a FODO lattice scheme, which leaves space for steerers and diagnostics . In this paper beam dynamics studies and preliminary RF design are shown, including constraints in terms of quadrupole dimensions, total length, field stability, RF power, peak electric field.